Nissan Versa Sedan. Instruction — part 489
SYSTEM
HAC-11
< SYSTEM DESCRIPTION >
[MANUAL AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
CONTROL BY THERMO CONTROL AMP.
Low Temperature Protection Control
• When thermo control amp. detects that evaporator fin temperature
is 1.5
°C (35°F) or less, thermo control amp. switches A/C ON sig-
nal to OFF and stops the compressor.
When the evaporator fin temperature returns to 3
°C (37°F) or
more, the compressor is activated.
CONTROL BY ECM
Refrigerant Pressure Protection
The refrigerant system is protected against excessively high- or low-pressures by the refrigerant pressure sen-
sor, located on the liquid tank on the condenser. The refrigerant pressure sensor detects the pressure inside
the refrigerant line and sends a voltage signal to the ECM. If the system pressure rises above or falls below
the following values, the ECM requests the IPDM E/R to de-energize the A/C relay and disengage the com-
pressor.
• 3.12 MPa (31.82 kg/cm
2
, 452.4 psi) or more (When the engine speed is less than 1,500 rpm)
• 2.74 MPa (27.95 kg/cm
2
, 397.3 psi) or more (When the engine speed is 1,500 rpm or more)
• 0.14 MPa (1.43 kg/cm
2
, 20.3 psi) or less
Compressor Oil Circulation Control
When the engine starts while the engine coolant temperature is 56
°C (133°F) or less, ECM activates the com-
pressor for approximately 6 seconds and circulates the compressor oil once.
Air Conditioning Cut Control
When the engine is under a high load condition, the ECM transmits an A/C relay OFF request to IPDM E/R,
and stops the compressor. Refer to
EC-38, "AIR CONDITIONING CUT CONTROL : System Description"
MANUAL AIR CONDITIONING SYSTEM : Door Control
INFOID:0000000009269782
SWITCHES AND THEIR CONTROL FUNCTIONS
JMIIA1228GB
HAC-12
< SYSTEM DESCRIPTION >
[MANUAL AIR CONDITIONING]
SYSTEM
*: With rear foot duct
AIR DISTRIBUTION
With rear foot duct
1.
Intake door
2.
Blower motor
3.
Evaporator
4.
Air mix door
5.
Heater core
6.
Foot door
7.
Ventilator and defroster door
Fresh air intake
Recirculation air
Defroster
Center ventilator
Side ventilator
Foot
Rear foot
*
Switch/Dial
position
Door position
V
e
nt
ila
to
r an
d
d
ef
ros
ter doo
r
Fo
ot
do
or
In
ta
ke
do
or
Ai
r mi
x
do
or
MODE dial
B
A
—
—
A – B
A
A – B
A – B
A
Air intake lever
—
—
A
B
Temperature control dial
Full cold
—
A
Full hot
B
JMIIA1751ZZ
SYSTEM
HAC-13
< SYSTEM DESCRIPTION >
[MANUAL AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Without rear foot duct
Discharge air flow
Mode position indi-
cation
Air outlet/distribution
Ventilator
Foot
Defroster
Center
Side
Front
Rear
50%
50%
—
—
—
29%
25%
28%
18%
—
—
14%
47%
22%
17%
—
14%
36%
20%
30%
—
22%
—
—
78%
Discharge air flow
Mode position indication
Air outlet/distribution
Ventilator
Foot
Defroster
Center
Side
50%
50%
—
—
30%
30%
40%
—
—
14%
66%
20%
—
14%
51%
35%
—
22%
—
78%
HAC-14
< SYSTEM DESCRIPTION >
[MANUAL AIR CONDITIONING]
OPERATION
OPERATION
Switch Name and Function
INFOID:0000000009269783
CONTROLLER
SWITCH OPERATION
1.
Fan control dial (fan switch)
2.
MODE dial
3.
Intake lever
4.
Temperature control dial
5.
A/C switch
JMIIA0933ZZ
Fan control dial (fan
switch)
Fan speed can be adjusted within a range from 1st to 4th.
MODE dial
Mode position is selected to an optimal position by operating this dial.
Intake lever
The air inlet changes REC
⇔ FRE each time by operation this lever.
Temperature control dial
The setting temperature can be selected to an optimum temperature by operating this dial.
A/C switch
The compressor control (switch indicator) is turned ON
⇔ OFF each time by pressing this switch
while the blower motor is activated.
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